“Kylie may be keeping tight-lipped, but Josh isn’t as keen to keep it a secret," a source told The Sun. “He was proudly speaking about his fiancée to several guests and even joked that being with her meant he wouldn’t have any problem getting into parties."

The 47-year-old Aussie singer met Sasse, 28, on the set of his show Galavant last September, when she appeared as a guest star.

The age gap certainly isn't a problem for these two, because it looks as though their relationship is moving forward like a "Locomotion." Apparently, he proposed two months ago.

Last week, the pair attended The Prince's Trust "Invest in Futures" Gala in London, hosted by Prince Charles.

Sasse shared this photo to his Instagram account, writing in the caption, "A wonderful night supporting my Lady and @princestrust"

We support this union far more than we did Minogue's brief affair with Jean-Claude Van Damme, who confessed that the two shared "beautiful lovemaking" while on location in Thailand shooting Street Fighter.